CVE-2016-9256

moderate-risk
Published 2017-05-09

In F5 BIG-IP 12.1.0 through 12.1.2, permissions enforced by iControl can lag behind the actual permissions assigned to a user if the role_map is not reloaded between the time the permissions are changed and the time of the user's next request. This is a race condition that occurs rarely in normal usage; the typical period in which this is possible is limited to at most a few seconds after the permission change.

Do I need to act?

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0.23% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / HIGH complexity

Affected Products (20)

Affected Vendors

F5

References (4)

Third Party Advisory http://www.securityfocus.com/bid/96464
Vendor Advisory https://support.f5.com/csp/article/K47284724
Third Party Advisory http://www.securityfocus.com/bid/96464
Vendor Advisory https://support.f5.com/csp/article/K47284724
47
/ 100
moderate-risk
Severity 22/34 · High
Exploitability 1/34 · Minimal
Exposure 24/34 · High